Inventors:
Mahmoud Y. Ghannam - Canton MI, US
Howard E. Churchwell - Monroe MI, US
Todd N. Clark - Dearborn MI, US
John W. Jensen - Canton MI, US
Assignee:
Ford Global Technologies, LLC - Dearborn MI
International Classification:
B60Q 1/00
G02F 1/15
G02B 23/16
US Classification:
340449, 340438, 3404255, 340517, 340522, 340667, 340555, 340588, 340601, 34081541, 340600, 34053928, 359265, 359275, 359601, 349 16
Abstract:
A sun protection system for a transportation vehicle has plurality of LCD zones laminated into one or more glazings of the vehicle. An occupant sensor detects an expanse of at least one occupant in the vehicle. A navigation system determines a vehicle location, a date and time value, and a heading. External and internal temperature sensors sense outside and inside temperatures. A controller generates respective drive signals for the respective LCD zones in a manual mode and in an automatic mode. The controller compares a temperature difference between the outside temperature and the inside temperature to a temperature threshold. The respective drive signals provide substantially zero attenuation if the temperature difference is less than the temperature threshold while in the automatic mode.